﻿/*
 * FCKeditor - The text editor for Internet - http://www.fckeditor.net
 * Copyright (C) 2003-2009 Frederico Caldeira Knabben
 *
 * == BEGIN LICENSE ==
 *
 * Licensed under the terms of any of the following licenses at your
 * choice:
 *
 *  - GNU General Public License Version 2 or later (the "GPL")
 *    http://www.gnu.org/licenses/gpl.html
 *
 *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
 *    http://www.gnu.org/licenses/lgpl.html
 *
 *  - Mozilla Public License Version 1.1 or later (the "MPL")
 *    http://www.mozilla.org/MPL/MPL-1.1.html
 *
 * == END LICENSE ==
 *
 * Advanced document processors.
 */

var FCKDocumentProcessor = new Object() ;
FCKDocumentProcessor._Items = new Array() ;

FCKDocumentProcessor.AppendNew = function()
{
    var oNewItem = new Object() ;
    this._Items.push( oNewItem ) ;
    return oNewItem ;
}

FCKDocumentProcessor.Process = function( document )
{
    var bIsDirty = FCK.IsDirty() ;
    var oProcessor, i = 0 ;
    while( ( oProcessor = this._Items[i++] ) )
        oProcessor.ProcessDocument( document ) ;
    if ( !bIsDirty )
        FCK.ResetIsDirty() ;
}

var FCKDocumentProcessor_CreateFakeImage = function( fakeClass, realElement )
{
    var oImg = FCKTools.GetElementDocument( realElement ).createElement( 'IMG' ) ;
    oImg.className = fakeClass ;
    oImg.src = FCKConfig.BasePath + 'images/spacer.gif' ;
    oImg.setAttribute( '_fckfakelement', 'true', 0 ) ;
    oImg.setAttribute( '_fckrealelement', FCKTempBin.AddElement( realElement ), 0 ) ;
    return oImg ;
}

// Link Anchors
if ( FCKBrowserInfo.IsIE || FCKBrowserInfo.IsOpera )
{
    var FCKAnchorsProcessor = FCKDocumentProcessor.AppendNew() ;
    FCKAnchorsProcessor.ProcessDocument = function( document )
    {
        var aLinks = document.getElementsByTagName( 'A' ) ;

        var oLink ;
        var i = aLinks.length - 1 ;
        while ( i >= 0 && ( oLink = aLinks[i--] ) )
        {
            // If it is anchor. Doesn't matter if it's also a link (even better: we show that it's both a link and an anchor)
            if ( oLink.name.length > 0 )
            {
                //if the anchor has some content then we just add a temporary class
                if ( oLink.innerHTML !== '' )
                {
                    if ( FCKBrowserInfo.IsIE )
                        oLink.className += ' FCK__AnchorC' ;
                }
                else
                {
                    var oImg = FCKDocumentProcessor_CreateFakeImage( 'FCK__Anchor', oLink.cloneNode(true) ) ;
                    oImg.setAttribute( '_fckanchor', 'true', 0 ) ;

                    oLink.parentNode.insertBefore( oImg, oLink ) ;
                    oLink.parentNode.removeChild( oLink ) ;
                }
            }
        }
    }
}

// Page Breaks
var FCKPageBreaksProcessor = FCKDocumentProcessor.AppendNew() ;
FCKPageBreaksProcessor.ProcessDocument = function( document )
{
    var aDIVs = document.getElementsByTagName( 'DIV' ) ;

    var eDIV ;
    var i = aDIVs.length - 1 ;
    while ( i >= 0 && ( eDIV = aDIVs[i--] ) )
    {
        if ( eDIV.style.pageBreakAfter == 'always' && eDIV.childNodes.length == 1 && eDIV.childNodes[0].style && eDIV.childNodes[0].style.display == 'none' )
        {
            var oFakeImage = FCKDocumentProcessor_CreateFakeImage( 'FCK__PageBreak', eDIV.cloneNode(true) ) ;

            eDIV.parentNode.insertBefore( oFakeImage, eDIV ) ;
            eDIV.parentNode.removeChild( eDIV ) ;
        }
    }
/*
    var aCenters = document.getElementsByTagName( 'CENTER' ) ;

    var oCenter ;
    var i = aCenters.length - 1 ;
    while ( i >= 0 && ( oCenter = aCenters[i--] ) )
    {
        if ( oCenter.style.pageBreakAfter == 'always' && oCenter.innerHTML.Trim().length == 0 )
        {
            var oFakeImage = FCKDocumentProcessor_CreateFakeImage( 'FCK__PageBreak', oCenter.cloneNode(true) ) ;

            oCenter.parentNode.insertBefore( oFakeImage, oCenter ) ;
            oCenter.parentNode.removeChild( oCenter ) ;
        }
    }
*/
}

// EMBED and OBJECT tags.
var FCKEmbedAndObjectProcessor = (function()
{
    var customProcessors = [] ;

    var processElement = function( el )
    {
        var clone = el.cloneNode( true ) ;
        var replaceElement ;
        var fakeImg = replaceElement = FCKDocumentProcessor_CreateFakeImage( 'FCK__UnknownObject', clone ) ;
        FCKEmbedAndObjectProcessor.RefreshView( fakeImg, el ) ;

        for ( var i = 0 ; i < customProcessors.length ; i++ )
            replaceElement = customProcessors[i]( el, replaceElement ) || replaceElement ;

        if ( replaceElement != fakeImg )
            FCKTempBin.RemoveElement( fakeImg.getAttribute( '_fckrealelement' ) ) ;

        el.parentNode.replaceChild( replaceElement, el ) ;
    }

    var processElementsByName = function( elementName, doc )
    {
        var aObjects = doc.getElementsByTagName( elementName );
        for ( var i = aObjects.length - 1 ; i >= 0 ; i-- )
            processElement( aObjects[i] ) ;
    }

    var processObjectAndEmbed = function( doc )
    {
        processElementsByName( 'object', doc );
        processElementsByName( 'embed', doc );
    }

    return FCKTools.Merge( FCKDocumentProcessor.AppendNew(),
               {
                ProcessDocument : function( doc )
                {
                    // Firefox 3 would sometimes throw an unknown exception while accessing EMBEDs and OBJECTs
                    // without the setTimeout().
                    if ( FCKBrowserInfo.IsGecko )
                        FCKTools.RunFunction( processObjectAndEmbed, this, [ doc ] ) ;
                    else
                        processObjectAndEmbed( doc ) ;
                },

                RefreshView : function( placeHolder, original )
                {
                    if ( original.getAttribute( 'width' ) > 0 )
                        placeHolder.style.width = FCKTools.ConvertHtmlSizeToStyle( original.getAttribute( 'width' ) ) ;

                    if ( original.getAttribute( 'height' ) > 0 )
                        placeHolder.style.height = FCKTools.ConvertHtmlSizeToStyle( original.getAttribute( 'height' ) ) ;
                },

                AddCustomHandler : function( func )
                {
                    customProcessors.push( func ) ;
                }
            } ) ;
} )() ;

FCK.GetRealElement = function( fakeElement )
{
    var e = FCKTempBin.Elements[ fakeElement.getAttribute('_fckrealelement') ] ;

    if ( fakeElement.getAttribute('_fckflash') )
    {
        if ( fakeElement.style.width.length > 0 )
                e.width = FCKTools.ConvertStyleSizeToHtml( fakeElement.style.width ) ;

        if ( fakeElement.style.height.length > 0 )
                e.height = FCKTools.ConvertStyleSizeToHtml( fakeElement.style.height ) ;
    }

    return e ;
}

// HR Processor.
// This is a IE only (tricky) thing. We protect all HR tags before loading them
// (see FCK.ProtectTags). Here we put the HRs back.
if ( FCKBrowserInfo.IsIE )
{
    FCKDocumentProcessor.AppendNew().ProcessDocument = function( document )
    {
        var aHRs = document.getElementsByTagName( 'HR' ) ;

        var eHR ;
        var i = aHRs.length - 1 ;
        while ( i >= 0 && ( eHR = aHRs[i--] ) )
        {
            // Create the replacement HR.
            var newHR = document.createElement( 'hr' ) ;
            newHR.mergeAttributes( eHR, true ) ;

            // We must insert the new one after it. insertBefore will not work in all cases.
            FCKDomTools.InsertAfterNode( eHR, newHR ) ;

            eHR.parentNode.removeChild( eHR ) ;
        }
    }
}

// INPUT:hidden Processor.
FCKDocumentProcessor.AppendNew().ProcessDocument = function( document )
{
    var aInputs = document.getElementsByTagName( 'INPUT' ) ;

    var oInput ;
    var i = aInputs.length - 1 ;
    while ( i >= 0 && ( oInput = aInputs[i--] ) )
    {
        if ( oInput.type == 'hidden' )
        {
            var oImg = FCKDocumentProcessor_CreateFakeImage( 'FCK__InputHidden', oInput.cloneNode(true) ) ;
            oImg.setAttribute( '_fckinputhidden', 'true', 0 ) ;

            oInput.parentNode.insertBefore( oImg, oInput ) ;
            oInput.parentNode.removeChild( oInput ) ;
        }
    }
}

// Flash handler.
FCKEmbedAndObjectProcessor.AddCustomHandler( function( el, fakeImg )
    {
        if ( ! ( el.nodeName.IEquals( 'embed' ) && ( el.type == 'application/x-shockwave-flash' || /\.swf($|#|\?)/i.test( el.src ) ) ) )
            return ;
        fakeImg.className = 'FCK__Flash' ;
        fakeImg.setAttribute( '_fckflash', 'true', 0 );
    } ) ;

// Buggy <span class="Apple-style-span"> tags added by Safari.
if ( FCKBrowserInfo.IsSafari )
{
    FCKDocumentProcessor.AppendNew().ProcessDocument = function( doc )
    {
        var spans = doc.getElementsByClassName ?
            doc.getElementsByClassName( 'Apple-style-span' ) :
            Array.prototype.filter.call(
                    doc.getElementsByTagName( 'span' ),
                    function( item ){ return item.className == 'Apple-style-span' ; }
                    ) ;
        for ( var i = spans.length - 1 ; i >= 0 ; i-- )
            FCKDomTools.RemoveNode( spans[i], true ) ;
    }
}
